I've checked the APNs so many times I've memorized what they're supposed to be. They ARE correct. Is there anything other than having the APNs setup and the data enabled that I can troubleshoot to figure out why my data isn't working?
BTW, I've talked to support. They are of no use. They have me check the APNs, pull SIM, roboot, check APNS, pull SIM, reboot, ..., and on the 10th iteration, they say it could be a tower problem. But it's been like this since I got the phone. I'd like to think they wouldn't have tower problems for 4 days in a row.
TylerH94 said:
I've checked the APNs so many times I've memorized what they're supposed to be. They ARE correct. Is there anything other than having the APNs setup and the data enabled that I can troubleshoot to figure out why my data isn't working?
BTW, I've talked to support. They are of no use. They have me check the APNs, pull SIM, roboot, check APNS, pull SIM, reboot, ..., and on the 10th iteration, they say it could be a tower problem. But it's been like this since I got the phone. I'd like to think they wouldn't have tower problems for 4 days in a row.
Click to expand...
Click to collapse
1- The easiest way to make sure your sim card and your subscription is OK is putting your sim card into another 'good' phone.
2- Also have another 'good' sim (from the same mobile network) and test with the same 'good' phone at the same location to make sure the network (tower) is good.
3- After (1) and (2), you are sure that your sim card and your network is OK. Then the problem is your device. Try some of the following steps:
a) Consult your service provider for the proper APN parameters and modify it accordingly.
b) You may need to factory reset your device
vndnguyen said:
1- The easiest way to make sure your sim card and your subscription is OK is putting your sim card into another 'good' phone.
2- Also have another 'good' sim (from the same mobile network) and test with the same 'good' phone at the same location to make sure the network (tower) is good.
3- After (1) and (2), you are sure that your sim card and your network is OK. Then the problem is your device. Try some of the following steps:
a) Consult your service provider for the proper APN parameters and modify it accordingly.
b) You may need to factory reset your device
Click to expand...
Click to collapse
The APN is correct. I've typed all of it in at least 10 times. Literally. (And I'm not using "literally" as an intensifier there.) And I got them from Cricket's website and from their support staff (both gave the same settings). Since I've checked them so many times and I got them from official sources, I know that the settings entered are correct. I'm pretty certain it is the device or maybe the SIM. But calling and texting work fine, so that should rule out the SIM. (Right?)
I've factory reset the device at least once, while replacing stock firmware with AOKP. (I don't think flashing contributed because it was broken before and after flashing AOKP.) And like I said, APN is correct. Is there anything else? I've looked at the settings in the *#*#4636#*#* screen, but apart from the SMSC, I don't know what any of those settings are for and thus I don't know if any of those settings are related to data/MMS. (I know SMSC is for texting not data/MMS, I'm just saying that as a cue to remind you of the screen.)
TylerH94 said:
The APN is correct. I've typed all of it in at least 10 times. Literally. (And I'm not using "literally" as an intensifier there.) And I got them from Cricket's website and from their support staff (both gave the same settings). Since I've checked them so many times and I got them from official sources, I know that the settings entered are correct. I'm pretty certain it is the device or maybe the SIM. But calling and texting work fine, so that should rule out the SIM. (Right?)
I've factory reset the device at least once, while replacing stock firmware with AOKP. (I don't think flashing contributed because it was broken before and after flashing AOKP.) And like I said, APN is correct. Is there anything else? I've looked at the settings in the *#*#4636#*#* screen, but apart from the SMSC, I don't know what any of those settings are for and thus I don't know if any of those settings are related to data/MMS. (I know SMSC is for texting not data/MMS, I'm just saying that as a cue to remind you of the screen.)
Click to expand...
Click to collapse
- Did you check the steps (1) and (2) as I've mentioned above?
- No need to touch any settings in the *#*#4636#*#*. If you have changed something there, make sure the 'Preferred network type' is set to 'WCDMA preferred'.
- Enter the secret code *#2263# and see what option is selected?
- If you can not enter this secret code, you can use Phone INFO ★Samsung★ app or Shortcut Master app to launch the secret codes (under the 'Secret Code' menu, root is required).
Apparently it was the APNs. I checked the SIM in another phone and it didn't work and then maybe 15 minutes later I changed the authentication type to PAP and it stated working immediately after. So that leaves me with the conclusion that it must have either been a weird coincidence that they fixed the towers almost immediately after the change or the change made the difference. The thing is: their official APN settings say to leave it authentication type! Wtf?
Thanks for the helpful suggestions. Under normal circumstances, they would have undoubtedly been sufficient to determine and maybe even fix the problem.
Sent from my SM-N900T using Tapatalk
Hi All,
Please help. I'm a rookie at rooting and have an unlocked Japanese Note 3 through AU (my Japanese service provider). I was in a rush and paid someone to unlock it before heading back to the States last year. The phone works with my AT&T sim card but when I am back in Japan (with Japanese sim) I am constantly being dropped from the network. 4G service usually works for internet, etc, but I cannot make/receive phone calls and only occasionally can send/receive text messages. I need to know if I should re-root the phone (and leave it rooted) or just do a factory reset (or perhaps change some other setting to get things working again)? The problem with a factory reset is that it will probably re-lock the phone and I don't have a code.
Strange Detail:
Whenever I try to dial a number, the name of a Chinese Province shows up under the Contact's Name. This suggested to me some network issue where the phone somehow thinks it's in China (though texts still kinda work...) and doesn't connect correctly to the Japanese network.
Details:
Model: sm-N900J (per the download screen) i believe this means it has a SnapDragon Processor
Knox warranty has been tripped (apparently by the guy I paid to unlock it originally - is that bad?)
Android 4.3 (looks like I'm still in the original version of Jellybean. Should I upgrade to Kitkat or Lollipop?)
Other Issues:
As of two days ago, the phone now restarts after about 5 minutes of use. Like many Note 3 phones, it's always done the occasional random restart (another reason to root?) but now it's making the phone almost unusable. Also, since having the phone rooted/unlocked/re-rooted I always get a series of warnings upon start-up. Typically, standard Samsung apps like S Planner, Calendar Storage, Keyguard and Index Service have stopped. I have never been able to use the Calendar (or other basic apps) since it always crashes. Is this an issue with Knox clashing with something from the original root (I still see SuperSU loaded -but "turned off"- in the apps menu)?
Idealy...
...someone can help me decide the best course of action (Root, Reset, Other), and how to make sure I can connect back up to my Japanese network properly. I think I'd prefer to root since what I want is an unlocked phone that works smoothly, with good battery life, little to no bloatware, a custom theme and a working S pen. If I root, what's the best method (already have SuperSU apparently) and which ROM and version of Android would be the most stable?
Main Issues Recap:
No connection to phone network (or limited 4G internet).
Phone restarts every few minutes.
Many Apps crash upon Start-up.
Thanks in advance!
So, here's an update that someone with a similar problem might find useful...
Japan uses CDMA for voice and GSM for LTE Data. Somehow (probably through using my phone in the states on a GSM network) the phone was no longer connecting to the CDMA network. Since I'd gotten no responses and felt like there was a good chance that a factory reset would not reverse the sim-unlock I'd stupidly paid to have done, I did a factory reset. Despite appearing to have solved my Index Service, Calendar Storage, S Planner crashing issues, I was still having the exact same problem of LTE working but no CDMA network.
Somehow I stumbled on to this website...(well, I'm unable to post as a new user but searching for "How To Fix Samsung Galaxy error while searching for network" should bring it up).
There, I found some really odd directions that solve network error issues. The only part of the instructions I was really able to carry out was take out the battery and simultaneously press the home and power buttons 10 times. I restarted my phone and miraculously was able to place a call for the first time in a year in Japan!
But then I no longer had any data. I figured it had to do with the APN settings being wiped in the strange reset I just tried. But when I went into Settings>More Networks>Mobile Networks there was no longer an Access Point Names option in the menu. There is no longer a "Network Mode" option either. I used to have that set to LTE/WCDMA/GSM but now I only see a System Select option that simply lets me change my CDMA roaming mode from Automatic to Home Only.
I tried searching everywhere for the missing Access Point Names menu to no avail (and almost attempted to try flashing CyanogenMod for the time hoping this would bring back the APN settings menu) but then I realized that I could do a search in the settings app. I searched APN and the option came right up (though it's frustrating that this now appears to be hidden). Using the following settings (copied below) from the AU by KDDI website I created a new APN profile. Now mobile date appears to be working just fine too!
So, now I just need to decide if I want to keep running Touchwiz in Jellybean or use my new found confidence to try rooting and custom roms...
I'm also kind of curious to see that the next phone bill comes in as expected and I'm not being charged for a bunch of crazy usage! Also, any suggestions to help explain how I got into this problem in the first place, or how to clean up any loose ends would be appreciated.
APN Setting for LTE NET for DATA
APN name au.au-net.ne.jp
User name [email protected]
Password au
Authentication type CHAP
Ok I really derped hard. I use the *#*#4636#*#* menu to change my network type between 2G,3G and LTE as needed. The one under Cellular Network Settings doesn't work all the time as it chooses the selected type as 'preferred' whereas the service menu forces it.
I don't know why I did it, I went to the 3 dot menu in the hidden service menu and chose "Select radio band" and clicked on USA band which was the first option. [DO NOT TRY THIS ,THERE'S NO WAY TO REVERT]. I'm not in the US and now I've lost signal reception on my phone and since then I've flashed the radio image numerous times from the bootloader, even flashed my bootloader,radio,boot image,cache,system all over to no use. I am not getting any signal on my phone. I had done the same once on my Nexus 5 but don't remember what I did to fix it. I'm still trying everything I can think of. A full factory reset didn't help either. The SIM card is fine,I tried it on another phone. Please help.
maybe try flashing an older image. and then see? Also check the nexus 6 forums, I believe someone did something similar and i assume found a fix.
Were you ever able to figure out how to fix this? I ran into the same issue.
If you are on Verizon, select Band 6 on that Menu & let your phone sit for 10 minutes so that it register on the network again with new settings.
sayazs said:
Were you ever able to figure out how to fix this? I ran into the same issue.
Click to expand...
Click to collapse
Check this http://forum.xda-developers.com/showpost.php?p=64083667&postcount=14
I ended up replacing my device from my retailer.
I have the Moto G4 Play (XT1607) (Harpia) and I have decided to flash LineageOS (lineage-14.1-20170131-nightly-harpia-signed.zip) on it using TWRP v3.0.2 r5. After getting it installed I noticed that it was not connecting to my 4g LTE Internet (I have Ting). So I figured I needed to make some changes to the APN settings. So I go to Settings>... More> Cellular Networks and the moment I click on "Cellular networks" I get an error message saying "com.android.phone has stopped". After reflashing and trying again a few times with the same result, I tried using a completely different ROM. AOKP. (aokp_harpia_nougat_nightly_2017-01-31.zip) and I ran into the same exact problem I was having with LineageOS.
I then tried to see if I could force my way into the APN configuration using an app called "Change APN". This worked, but now I see the message "Access Point Name settings are not available for this user". I decided to ignore this and click on the + to create a new APN. After filling the correct info out for Ting APN, I click on "Save"... and it doesn't save at all.
I decided to revert to the stock rom, and everything works perfectly fine with the stock rom. 4G LTE on Ting works fine. Whenever I try using a custom ROM of any kind, I run into the problem I described above. I don't know if I am forgetting to do something, or completely doing something wrong. I could use some help with this guys.
Isn't Ting a Sprint service? I didn't think CDMA-based networks had APN settings to configure. Verizon and US Cellular have always used *22XXX for programming, as far as I can remember.
mkollersms said:
Isn't Ting a Sprint service? I didn't think CDMA-based networks had APN settings to configure. Verizon and US Cellular have always used *22XXX for programming, as far as I can remember.
Click to expand...
Click to collapse
Yes. Ting is a Sprint service. Well either way LTE isn't working and the 3G keeps randomly turning on and off whenever I use a custom ROM. However, when I use Stock firmware, everything works perfectly fine. I am unsure what is causing the issue.
It seems nearly all custom ROMs at this point are having data connectivity issues. I'm trying to find a nandroid of the original xt1607 rom so I can just go back until its all sorted out.
mkollersms said:
Isn't Ting a Sprint service? I didn't think CDMA-based networks had APN settings to configure. Verizon and US Cellular have always used *22XXX for programming, as far as I can remember.
Click to expand...
Click to collapse
With Ting you can choose to use Sprint or T-Mobile. I am using the T-Mobile side of Ting and you do need to add Ting's APN settings for it to work. I am still on factory ROM but watching closely to see what others are experiencing with custom ROMs.
n76 said:
With Ting you can choose to use Sprint or T-Mobile. I am using the T-Mobile side of Ting and you do need to add Ting's APN settings for it to work. I am still on factory ROM but watching closely to see what others are experiencing with custom ROMs.
Click to expand...
Click to collapse
I haven't noticed any issue with my GSM ting service on lineage. I get LTE and the WiFi/LTE handoff seems to work. I don't install many apps and don't let them run in the background, so perhaps there's a conflict between them that's shutting down LTE service. This is just a guess.
Anyone have any information pertaining to this subject? I've searched hours on hours to no avail. I run U.S. Cellular and on the newest RR-5.8.1-OMS after I go to Settings>More>Cellular Networks>Crash. Every time. Resets my radio and picks right back up again. Everything works until I'm in my house, then I'm roaming and there's no way to manage in settings because of the crash.
I looked around in the file system and in /data/data/com.android.phone/ there is no files, no .db files or anything. I don't know of there's supposed to be either. But like OP stated, stock rom is flawless.
Would I be and to copy com.android.phone from stock and restore after flashing? I don't know what to do but this is with every single custom ROM out right now on every release. Data and everything works fine as far as I can tell but just no way to configure the settings. Any help would be greatly appreciated!!!
[email protected] said:
Anyone have any information pertaining to this subject? I've searched hours on hours to no avail. I run U.S. Cellular and on the newest RR-5.8.1-OMS after I go to Settings>More>Cellular Networks>Crash. Every time. Resets my radio and picks right back up again. Everything works until I'm in my house, then I'm roaming and there's no way to manage in settings because of the crash.
Click to expand...
Click to collapse
Just out of curiosity, have you tried the *22XXX thing yet?
EDIT: Just so we're clear, with you all who have CDMA phones, when you go into "IMEI Information," it does show both an IMEI and an ICCID, right? Because if not, I think I figured out why your LTE isn't working.
I tried, I tried dialing *22999 (guessing that the x stood for the 9 button in T9 language) and pressed the make a call button. Am I wrong about the "XXX" part? Because I did try that when I seen it previously in the thread earlier but had the same thoughts.
So to make that novel a shorter version, what exactly should I dial?
[email protected] said:
I tried, I tried dialing *22999 (guessing that the x stood for the 9 button in T9 language) and pressed the make a call button. Am I wrong about the "XXX" part? Because I did try that when I seen it previously in the thread earlier but had the same thoughts.
So to make that novel a shorter version, what exactly should I dial?
Click to expand...
Click to collapse
It depends on the carrier and the model of the phone. For most Tracfones, it's *22890. For US Cellular, I've seen it as *228 and *22894. You may have to call your carrier and ask what their phone programming code is.
Aaah ok I got you now. Yes I've tried that on nearly every ROM. Matter of fact I just noticed I posted a little off topic almost, but I'm here for the relevance of com.android.phone crashing EVERY SINGLE TIME I try to open Cellular Networks. The only ROM I will say it doesn't force close on is the Slim Nougat ROM, but I don't run that because instead of Cellular Networks settings making com.android.phone crash its when you place a call and then it force closes the UI part of the call but still carries the call through. I forgot to mention that by the way, whatever it is in Slim that is the making the different reason for force closing com.android.phone could probably be a pretty easy red flag for someone better equipped for this Lind of troubleshooting than myself!
Thank you for the suggestion though on the *22(8 in my case)
[email protected] said:
Aaah ok I got you now. Yes I've tried that on nearly every ROM. Matter of fact I just noticed I posted a little off topic almost, but I'm here for the relevance of com.android.phone crashing EVERY SINGLE TIME I try to open Cellular Networks. The only ROM I will say it doesn't force close on is the Slim Nougat ROM, but I don't run that because instead of Cellular Networks settings making com.android.phone crash its when you place a call and then it force closes the UI part of the call but still carries the call through. I forgot to mention that by the way, whatever it is in Slim that is the making the different reason for force closing com.android.phone could probably be a pretty easy red flag for someone better equipped for this Lind of troubleshooting than myself!
Thank you for the suggestion though on the *22(8 in my case)
Click to expand...
Click to collapse
After I posted that, I went back to try and see if Lineage was able to pick up my phone's MEID (even though I use a GSM SIM, the MEID is still tied to the phone hardware). For some reason, Lineage is not reading it, and I think all of your problems are being attributed to that fact.
The way CDMA phones work (and god, do I hate this), is your 2G/3G network is tied to the phone MEID, while the LTE SIM is data only. The OS needs to read both the 14-digit MEID (sometimes shows as a 15 digit IMEI where last digit is 0) as well as the 20 digit ICCID (SIM Number). A phone may also use the SIM number itself as an IMEI (BYOP SIMs do this) by dropping the first five digits of the 20 digit SIM number.
If you phone is showing only one 15 digit number in the system settings, then it's either the MEID OR the SIM, not both. So either you have calling and no LTE, or LTE and no calling. You can't program APN settings because the phone has no idea what ID number to tie APN settings to. This is actually a rather serious conundrum.
Ok ok, makes sense. I checked my Status info, every ROM has dual SIM capability by the way so I don't know if that would effect anything for xt-1607, but I looked at SIM slot 1 info and it reads my MEID correctly with 14 digits. I couldn't find anything about ICCID. My head pounding question here though, why in the hell (pardon the language) is everything flawless on stock, but on every ROM this problem occurs? Here's my next killer, everything works like it should for me, LTE, 3G, Calls, SMS/MMS, just can't change any of the settings due to a force close, AND I put my friends Straight Talk SIM in and it fired right up with no force close when going to change Network settings...?!
[email protected] said:
Ok ok, makes sense. I checked my Status info, every ROM has dual SIM capability by the way so I don't know if that would effect anything for xt-1607, but I looked at SIM slot 1 info and it reads my MEID correctly with 14 digits. I couldn't find anything about ICCID. My head pounding question here though, why in the hell (pardon the language) is everything flawless on stock, but on every ROM this problem occurs? Here's my next killer, everything works like it should for me, LTE, 3G, Calls, SMS/MMS, just can't change any of the settings due to a force close, AND I put my friends Straight Talk SIM in and it fired right up with no force close when going to change Network settings...?!
Click to expand...
Click to collapse
I think you just answered your own question. As stated in PCMag back in 2015, "Nobody makes a Dual-Sim phone compatible with Sprint or Verizon." It legitimately believes your MEID is a GSM-based IMEI, and is attempting to cross the streams, so to speak. And the only way your friend's StraightTalk SIM would work is if it was piggybacking off ATT or TMo's networks (the MEID would have been paired to the other phone causing a mismatch).
If you look at the stock ROM for this phone, you will see a BUNCH of system apps for programming Sprint and Verizon network information. They never made it into the custom ROMs we're using. FWIW, here's my thoughts on the matter. Someone needs to go back and make a single-SIM variant of these ROMs, as well as a flashable ZIP containing the necessary APKs for Android to detect the necessary information correctly. And if that doesn't happen, then everyone who bought an XT-1607 has to ditch their carrier and move to a GSM carrier.
That makes complete and total sense! Because I wasn't thinking this while time of it but I was in Oklahoma at the time where the main towers are AT&T, matter of fact Sprint and U.S. Cellular lose almost all signal right when you hit the county line where I was at. Verizon only gets signal because it's Verizon, lol. Reason I say that is because I was wondering why this whole time I has full signal with LTE coverage and completely list everything when I went hone, because where I live is complete opposite, there is hardly any GSM coverage, we don't even have an AT&T store, just Verizon, Sprint, USC.
So, with that being figured out, my laptop just recently kicked the bucket on me so I'm out for the most part, I do have a trick to swap files in and out of a compressed archive without extracting it in any way! But, it takes a while, not too much longer I guess but nowvi just remembered everything is pretty much .dat files so nevermind that.
Not that this thread isn't the most popular, but where would be the best place to take this request too to get the most attention from it? I mean if I had to go back to stock, so be it, but I'm a little spoiled to the custom life. Lol.
[email protected] said:
Not that this thread isn't the most popular, but where would be the best place to take this request too to get the most attention from it? I mean if I had to go back to stock, so be it, but I'm a little spoiled to the custom life. Lol.
Click to expand...
Click to collapse
IIRC, there is a Verizon thread with 80ish replies, but I think a developer like Squid might need to be made aware of this, so I might copy this into the Lineage thread.
A bit of good news. While reflashing all the time that were force closing when opening cellular networks, I looked in /data/data/com.android.phone/ and was looking, now remember to go back to that directory after I say all this, I found that directory was empty, on all of the Roms. Was curious so I flashed back to stock. Went to the same directory, BOOM! com.android.phone was not empty, in that folder I found 2 folders that were now populated with in:
1: (/files/ )I now had a file named carrierconfig-com.android.carrierconfig- (and after the dash was my ICCID number) so for this directory I need /data/data/com.android.phone/files/carrierconfig-com.android.carrierconfig**ICCID** (replace **ICCID** my ICCID number)
2: then there was this /data/data/com.android.phone/shared_prefs/_has_set_default_values.xml
and
phone/shared_prefs/com.android.phone_preferences.xml
These files are missing on all the Roms, I know this doesn't since everything, but I know for almost a fact it's a good chunk of something that needs to be available. Can I copy these files and move them into place, and set permissions how they were? I ran out of time tonight, and am busy all week so this is mainly for reference I guess. More research told me these files can be edited to change what is available to configure in cellular network settings like option to change from 2G, 3G, LTE, APN, and so on. Sorry for the mess, that's all I have for right now.
[email protected] said:
These files are missing on all the Roms, I know this doesn't since everything, but I know for almost a fact it's a good chunk of something that needs to be available. Can I copy these files and move them into place, and set permissions how they were? I ran out of time tonight, and am busy all week so this is mainly for reference I guess. More research told me these files can be edited to change what is available to configure in cellular network settings like option to change from 2G, 3G, LTE, APN, and so on. Sorry for the mess, that's all I have for right now.
Click to expand...
Click to collapse
That is definitely a major find! My only concern is even if you do that, there might be further missing components that would cause Dialer to crash on startup or some other wacky side effect. However, if you can make it work, then it's possible the proper APN settings will load by default and you'll no longer need to change them.
If you can, go into the System Apps on the stock ROM and look for any APKs branded by/with Sprint, VZW or USCellular, or anything CDMA related. They might be necessary for reading the SIM's ICCID.
That's what I was thinking too, and sadly for me I don't really know EVERYTHING to look for so it'll be mostly out of trial and error for me to figure it out. I wish they didn't compress Roms into .dat so I could use a root explorer to swap between tabs rather than copy, flash the rom, paste files and then if that didn't work start all over on restoring stock, so on and so forth. I miss my laptop. =(
Updates?
Has anyone looked into this further? I'm experiencing the same problem with the latest LineageOS nightly. US Cellular Prepaid with an XT1607.
I noticed that in my case i had to skip the Insert Sim thing on 1st boot. It never did whatever it wanted to there. (Maybe because I have no signal or weak roaming where I live?)
I'm seriously considering trying it from an area that I have good service in..
Hi all,
Greetings I'm new here. Just found this XDA forum last night. What happened was:
a. I have a G7 XT1955-4 and it suddenly has no signal. The sim can be detected, though. It's showing StarHub (I'm in Singapore) and my number.
b. IMEI looks fine, too, but noticed that it's showing Radio Off. Can't be turned on even though using *#*#426#*#*.
c. I read this forum and after many tries, I managed to fastboot using https://mirrors.lolinet.com/firmware/moto/ocean/official/RETAPAC/ (I chose XT1955-4_OCEAN_RETAPAC_10_QPOS30).
d. Other version such RETAPAC 9 or RETAIL 9 and 10 didn't work.
e. However, after fastbooting using the version on point #c (it can load and I configured it just like a first time setup after factory reset), the problem persists. Still no signal and showing Radio Off. What can be done here?
Note:
I'm no programmer and I just managed to get it work by trial and error.
Is Ocean same as River? Either way there is also a setting unset settings, network @ internet, mobile network, preferred network type, make sure that's right, sometimes rocking the settings will fix it. Except your is showing radio off , is a g7 retail ocean? I have not reinstalled stock in years, so I can't remember, but you know a g7 is "river" though, right?
Droid4200 said:
Is Ocean same as River? Either way there is also a setting unset settings, network @ internet, mobile network, preferred network type, make sure that's right, sometimes rocking the settings will fix it. Except your is showing radio off , is a g7 retail ocean? I have not reinstalled stock in years, so I can't remember, but you know a g7 is "river" though, right?
Click to expand...
Click to collapse
Sorry, I'm not sure if I understand the question, but I seem to see it somewhere on the phone that it's Retail Ocean. Upon further investigation, I start wondering if it's actually a hardware problem...
Sorry was too early and messed up with auto correct, something I found that helps is, playing with settings, found in, settings, network & internet, mobile network, preferred network type(LTE CDMA and so on), make sure that's right, sometimes rocking the settings will fix it. Also there is an APN setting, make sure your carrier is right. Also there is airplane mode and data mode, make sure airplane mode is off, make sure data is on. On custom Rom the worst case Is like getting g3 instead of 4g or 4g instead of volte, a setting I have seen that will keep a phone from connection properly is APN, make sure. If its not one of the above I have never seen it. Have you tried installing a custom ROM with success? Also Motorola now has program, forgot what its called, it'll reflash a stock phone, haven't used it in a while but it'll probably automatically download the correct firmware, maybe it is called moto helper?, also Sim cards can go bad, my g7 has been threw 2-3 already.